Article
Thermodynamics
Rongji Xu, Jingyan Chen, Xiaohui Zhang, Ruixiang Wang, Shuhui Xu
Summary: The compound parabolic concentrator-pulsating heat pipe solar collector (CPC-PHPSC) utilizes pulsating heat pipe (PHP) to achieve efficient energy conversion. The optimal tilt angle and solar radiation intensity were found to maximize the heat collection performance, while excessive air speed increases convective heat loss.
JOURNAL OF THERMAL SCIENCE
(2022)
Article
Green & Sustainable Science & Technology
Rongji Xu, Zhencheng He, Liwei Yang, Shuhui Xu, Ruixiang Wang, Huasheng Wang
Summary: The compound parabolic concentrator is a non-imaging concentrator that can concentrate solar radiation without a tracking system. To increase the effective working hours at high concentration ratio, a tracking solar collector is proposed that integrates the compound parabolic concentrator and flat microchannel tube.
Article
Thermodynamics
Li Wei Yang, Rong Ji Xu, Wen Bin Zhou, Yan Li, Tong Yang, Hua Sheng Wang
Summary: This paper presents numerical simulations of solar assisted air source heat pump heating systems using compound parabolic concentrator-capillary tube solar collectors for domestic heating in the UK. The results show that the concentrated solar collector required is one third smaller in size and significantly reduces cost and convenient for installation compared to flat plate solar collectors. The high efficiency of the compound parabolic concentrator-capillary tube solar collector enables a smaller size of solar collector and wide rollout of solar assisted air source heat pump heating systems in locations with lower solar irradiance.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Energy & Fuels
Kumaresan Govindasamy, Vijayakumar Palanivel, Radhey Shyam Meena, Suresh Muthusamy, Hitesh Panchal, Mohd. Asif Shah, Md Irfanul Haque Siddiqui
Summary: This experimental study evaluated the performance of a solar collector with evacuated tube heat pipe and compound parabolic concentrator at different tilt angles. The results showed that the collector achieved maximum efficiency at a tilt angle of 45 degrees.
ENERGY EXPLORATION & EXPLOITATION
(2023)
Article
Green & Sustainable Science & Technology
Xiaomeng Chen, Xudong Yang
Summary: The paper proposes a novel solar collector module to address the mismatch between seasonal solar energy availability and demand loads, achieving high efficiency in winter and cooling effect in summer.
Article
Green & Sustainable Science & Technology
Vijayakumar Palanivel, Kumaresan Govindasamy, Gokul Karthik Arunachalam
Summary: The compound parabolic collector with pulsating heat pipe is developed to enhance thermal efficiency and reduce heat losses by optimizing the working fluid and utilizing the BES algorithm. Experimentation and optimization results show improved thermal performance, and a hybrid DBN-BES algorithm is used for temperature, efficiency, and resistance prediction with lower error values compared to non-hybrid neural networks.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2022)
Article
Green & Sustainable Science & Technology
M. Sheikholeslami, Zafar Said, M. Jafaryar
Summary: This article presents a numerical simulation for the thermal analysis of a parabolic trough collector (PTC) with a wavy absorber tube using the finite volume method. The study investigates the performance of a new wavy absorber tube in a solar system with a parabolic reflector. The results show that increasing the Reynolds number (Re) and the volume concentration can improve the heat transfer efficiency.
Article
Thermodynamics
Latif Aref, Rasoul Fallahzadeh, Seyed Reza Shabanian, Mojtaba Hosseinzadeh
Summary: The study aims to increase the thermal efficiency of a flat plate closed-loop pulsating heat pipe solar collector by introducing a novel closed-loop pulsating heat pipe (CLPHP) with a dual-diameter structure. Experimental results show that the thermal performance of the dual-diameter configuration is considerably better than the single-diameter in different inclination angles, achieving a thermal efficiency of 72.4% under sunny weather conditions.
Article
Green & Sustainable Science & Technology
Virendra Vishnu Bhagwat, Sujit Roy, Biplab Das, Nikhilkumar Shah, Avijit Chowdhury
Summary: This study investigated the performance of a heat pipe assisted parabolic trough collector with paraffin wax based phase change material for solar energy storage. The experiment was conducted in North-East India, comparing the system with and without circular fins in the heat pipe evaporator section. The presence of fins improved both charging and discharging efficiency of the latent heat storage system.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Energy & Fuels
Sridhar Sripadmanabhan Indira, Chockalingam Aravind Vaithilingam, Kulasekharan Narasingamurthi, Ramsundar Sivasubramanian, Kok-Keong Chong, R. Saidur
Summary: This article discusses the electrical and thermal performance of a hybrid CPV/T-STEG system, comparing it to a prior system and analyzing the effects of various factors. The results show significant improvements in output for the developed hybrid system. The article also explores the exergy efficiency and its relationship with different factors.
Article
Construction & Building Technology
Zhiying Song, Jie Ji, Zhaomeng Li
Summary: The study investigates the combination of concentrated photovoltaics and direct-expansion solar-assisted heat pump, and finds that photovoltaic heat pump systems based on different concentrators show variations in electrical efficiency, coefficient of performance, and exergy efficiency.
ENERGY AND BUILDINGS
(2021)
Article
Thermodynamics
Omid Khaledi, Seyfolah Saedodin, Seyed Hadi Rostamian
Summary: This paper analyzes heat transfer mechanisms in a compound parabolic concentrator solar collector using a new thermal resistance network. The study develops an analytical thermal model based on nanofluids and validates it with experimental data. The results show good agreement between the model and experimental data, with an error percentage of less than 6% for the nanofluid. The thermal model can be applied to other heat transfer fluids in different conditions and is a useful tool for designing and optimizing compound parabolic concentrators.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Energy & Fuels
Zhiying Song, Jie Ji, Jingyong Cai, Bin Zhao, Zhaomeng Li
Summary: A novel direct-expansion solar-assisted heat pump with a hybrid compound parabolic concentrator/photovoltaic/fin evaporator is proposed in this paper, which can achieve a higher unit output by making full use of solar and air energy in limited space. Results show that when the irradiation is 200 W/m2 and above, the novel system performs the best in coefficient of performance, total output, and exergy efficiency.
Article
Green & Sustainable Science & Technology
Jun Ma, Cheng-Long Wang, Yuan Zhou, Rui-Dong Wang
Summary: This paper proposes an optimized design method for Linear Fresnel Collectors (LFCs), achieving high efficiency in CPC and mirror field design through studying the effects of CPC half-acceptance angle and truncation ratio on geometric optics efficiency. The results demonstrate that the optimized CPC and mirror field can achieve high efficiency in LFC systems.
Article
Thermodynamics
O. Elharoun, M. Tawfik, Ibrahim I. El-Sharkawy, E. Zeidan
Summary: Spectral splitting technology is used to prevent overheating and efficiency loss in photovoltaic cells. The technology splits the solar spectrum into two portions, with one portion generating electricity and the other generating heat. This study presents the design and performance evaluation of a novel PV-thermal system based on a compound parabolic concentrator and a selective absorptive fluid-based optical filter. Experimental findings show that all CPC-PV systems with an optical filter have a greater electrical efficiency of about 17% compared to systems without a filter and bare PV cells.
Article
Physics, Applied
Qiang Sheng, Jie Sun, Wen Wang, Hua Sheng Wang, Colin G. Bailey
JOURNAL OF APPLIED PHYSICS
(2017)
Article
Thermodynamics
Hua Sheng Wang, John W. Rose
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME
(2017)
Review
Thermodynamics
Lei Chai, Rabia Shaukat, Liang Wang, Hua Sheng Wang
APPLIED THERMAL ENGINEERING
(2018)
Article
Engineering, Manufacturing
Yan Li, Han Zhang, Yi Liu, Huasheng Wang, Zhaohui Huang, Ton Peijs, Emiliano Bilotti
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2018)
Article
Thermodynamics
Gang Wang, Qunli Zhang, Min Zeng, Rongji Xu, Guozhen Xie, Weipeng Chu
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
(2018)
Article
Thermodynamics
Xu Rongji, Chen Hao, Wu Qingping, Xu Shuhui, Wang Ruixiang
JOURNAL OF THERMAL SCIENCE
(2019)
Article
Thermodynamics
Rongji Xu, Chao Zhang, Hao Chen, Qingping Wu, Ruixiang Wang
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2019)
Article
Chemistry, Physical
Jin Huan Pu, Qiang Sheng, Jie Sun, Wen Wang, Hua Sheng Wang
JOURNAL OF MOLECULAR LIQUIDS
(2019)
Article
Thermodynamics
Nan Hua, Huan Xi, Rong Ji Xu, Ying Chen, Hua Sheng Wang
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2019)
Article
Thermodynamics
Xiaosheng Zheng, Xianglong Luo, Junwei Luo, Jianyong Chen, Yingzong Liang, Zhi Yang, Ying Chen, Huasheng Wang
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Thermodynamics
Rong Ji Xu, Yuan Qiang Zhao, Hao Chen, Qing Ping Wu, Li Wei Yang, Hua Sheng Wang
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Chemistry, Multidisciplinary
Jin Huan Pu, Jie Sun, Qjang Sheng, Wen Wang, Hua Sheng Wang
Article
Chemistry, Multidisciplinary
Jin Huan Pu, Jie Sun, Wen Wang, Hua Sheng Wang
Article
Engineering, Aerospace
Yang Chen, Huasheng Wang, Jixia Xia, Guobiao Cai, Zhenpeng Zhang
Article
Engineering, Chemical
Wenping Peng, Min Xu, Xunfeng Li, Xiulan Huai, Zhigang Liu, Huasheng Wang
CHEMICAL ENGINEERING SCIENCE
(2017)
Article
Thermodynamics
Pengcheng Zhao, Jingang Wang, Liming Sun, Yun Li, Haiting Xia, Wei He
Summary: The production of green hydrogen through water electrolysis is crucial for renewable energy utilization and decarbonization. This research explores the optimal electrode configuration and system design of compactly-assembled industrial electrolyzer. The findings provide valuable insights for industrial application of water electrolysis equipment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
V. Baiju, P. Abhishek, S. Harikrishnan
Summary: Thermally driven adsorption desalination systems (ADS) have gained attention as an eco-friendly solution for water scarcity. However, they face challenges related to low water productivity and scalability. To overcome these challenges, integrating ADS with other desalination technologies can create a small-scale hybrid system. This study proposes integrating ADS with a Thermo Electric Dehumidification (TED) unit to enhance its performance.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
C. X. He, Y. H. Liu, X. Y. Huang, S. B. Wan, Q. Chen, J. Sun, T. S. Zhao
Summary: A decentralized centroid multi-path RC network model is constructed to improve the temperature prediction accuracy compared to traditional RC models. By incorporating multiple heat flow paths and decentralizing thermal capacity, a more accurate prediction is achieved.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chaoying Li, Meng Wang, Nana Li, Di Gu, Chao Yan, Dandan Yuan, Hong Jiang, Baohui Wang, Xirui Wang
Summary: There is an urgent need to shift away from heavy dependence on fossil fuels and embrace renewable energy sources, particularly in the energy-intensive oil refining process. This study presents an innovative concept called the Solar Oil Refinery, which applies solar energy in oil refining. A solar multi-energies-driven hybrid chemical oil refining system that utilizes solar pyrolysis and electrolysis has been developed, significantly improving solar utilization efficiency, cracking rate, and hydrogen yield.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Chao Ma, Guanghui Wang, Dingbiao Wang, Xu Peng, Yushen Yang, Xinxin Liu, Chongrui Yang, Jiaheng Chen
Summary: This study proposes a bio-inspired fish-tail wind rotor to improve the wind power efficiency of the traditional Savonius rotor. Through transient simulations and orthogonal experiments, the key factors affecting the performance are identified. A response surface model is constructed to optimize the power coefficient, resulting in an improvement of 9.4% and 6.6% compared to the Savonius rotor.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sina Bahmanziari, Abbas-Ali Zamani
Summary: This paper proposes a new framework for improving electrical energy harvesting from piezoelectric smart tiles through a combination of magnetic plucking, mechanical impact, and mechanical vibration force mechanisms. Experimental results demonstrate a significant increase in energy yield and average energy harvesting time compared to other mechanisms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Nanjiang Dong, Tao Zhang, Rui Wang
Summary: This study establishes a multiobjective mixed-variable configuration optimization model for a comprehensive combined cooling, heating, and power energy system, and proposes an efficient generating operator to optimize this model. The experimental results show that the proposed algorithm performs better than other state-of-the-art algorithms.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Ahmed E. Mansy, Eman A. El Desouky, Tarek H. Taha, M. A. Abu-Saied, Hamada El-Gendi, Ranya A. Amer, Zhen-Yu Tian
Summary: This study aims to convert office paper waste into bioethanol through a sustainable pathway. The results show that physiochemical and enzymatic hydrolysis of the waste can yield a high glucose concentration. The optimal conditions were determined using the Box-Behnken design, and a blended membrane was used for ethanol purification.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Sven Klute, Marcus Budt, Mathias van Beek, Christian Doetsch
Summary: Heat pumps are crucial for decarbonizing heat supply, and steam generating heat pumps have the potential to decarbonize the industrial sector. This paper presents the current state, technical and economic data, and modeling principles of steam generating heat pumps.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Le Zhang, To-Hung Tsui, Yen Wah Tong, Pruk Aggarangsi, Ronghou Liu
Summary: This study investigates the effectiveness of a current-carrying-coil-based magnetic field in promoting anaerobic digestion of chicken manure. The results show that the applied magnetic field increases methane yield, decreases carbon dioxide production, and reduces the concentration of ammonia nitrogen. Microbial community analysis reveals the enrichment of certain methanogenic genera and enhanced metabolic pathways. Pilot-scale experiments confirm the technical effectiveness of the magnetic field assistance in enhancing anaerobic digestion of chicken manure.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Bo Chen, Ruiqing Ma, Yang Zhou, Rui Ma, Wentao Jiang, Fan Yang
Summary: This paper presents an advanced energy management strategy for fuel cell hybrid electric heavy-duty vehicles, focusing on speed planning and energy allocation. By utilizing predictive co-optimization control, this strategy ensures safe inter-vehicle distance and minimizes energy demand. Simulation results demonstrate the effectiveness of the proposed method in reducing fuel cell degradation cost and overall operation cost.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Fabio Fatigati, Roberto Cipollone
Summary: Organic Rankine Cycle-based microcogeneration systems that use solar sources to generate electricity and hot water can help reduce CO2 emissions in residential energy-intensive sectors. The adoption of a recuperative heat exchanger in these systems improves efficiency, reduces thermal power requirements, and saves on electricity costs.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Lipeng He, Renwen Liu, Xuejin Liu, Xiaotian Zheng, Limin Zhang, Jieqiong Lin
Summary: This research proposes a piezoelectric-electromagnetic hybrid energy harvester (PEHEH) for low-frequency wave motion and self-sensing wave environment monitoring. The PEHEH shows promising power output and the ability to self-power and self-sense the wave environment.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Shangling Chu, Yang Liu, Zipeng Xu, Heng Zhang, Haiping Chen, Dan Gao
Summary: This paper studies a distributed energy system integrated with solar and natural gas, analyzes the impact of different parameters on its energy utilization and emissions reduction, and obtains the optimal solution through an optimization algorithm. The results show that compared to traditional separation production systems, this integrated system achieves higher energy utilization and greater reduction in carbon emissions.
ENERGY CONVERSION AND MANAGEMENT
(2024)
Article
Thermodynamics
Qingpu Li, Yaqi Ding, Guangming Chen, Yongmei Xuan, Neng Gao, Nian Li, Xinyue Hao
Summary: This paper proposes and studies a piston-type thermally-driven pump with a structure similar to a linear compressor, aiming to eliminate the high-quality energy consumption of existing pumps and replace mechanical pumps. The coupling mechanism of working fluid flow and element dimension is analyzed based on force analysis, and experimental data analysis is used to determine the pump operation stroke. Theoretical simulation is conducted to analyze the correlation mechanism of the piston assembly. The research shows that the thermally-driven pump can greatly reduce power consumption and has potential for industrial applications.
ENERGY CONVERSION AND MANAGEMENT
(2024)